Question 464772
Petrolyn oil is a combination of natural oil and synthetic oil- 5 parts natural oil for every 3 parts of synthetic oil. How many liters of natural oil are contained in 560 liters of Petrolyn oil?
...
let x=liters of natural oil
560-x=liters of synthetic oil
..
x/(560-x)=5/3
3x=2800-5x
8x=2800
x=350
ans:
350 liters of natural oil are contained in 560 liters of Petrolyn oil